has this training device improve your golf swing and score?

I’d really like to find one on Amazon.com but I’d like to know where I can get a good one.

http://www.bigdoggolf.ca/golfmate2.html

its the golfmate 2, but i dont know where to buy it, help please.

I am looking for some fun yet very effective golf drills..you got any?

How many times should i practice a week? How many times should i play 18? I can play 4 times a week.